×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Pumps shall be rated for the transport of potable water

Pumps shall be rated for the transport of potable water

Pumps shall be rated for the transport of potable water

(OP)
Hi everyone,

I hope you can clarify something for me. (I'm an automation guy, so I'm accustomed to controlling pumps, but know little about pump specs).

I need to replace a defective booster pump. It is one of three over-sized 25 hp pumps (on VFD control) and expensive and time consuming to maintain.

I figure I can use a 7.5 hp and can throw it away cheaper than what is being paid just to replace a mechanical seal on the larger pumps. 99% of the time a 5 hp pump will provide the lift I need.

So, I check the Florida plumbing code and it says "Pumps shall be rated for the transport of potable water". Simple enough, until I start looking for a pump. Most manufactures seem to avoid the words "potable" or "domestic" in thier specs.
 
I see pumps for "industrial", "hvac", etc, than it gets rather vauge, "water systems", "booster systems", and wetted parts discriptions all seem to infer approved for "potable" but very few pumps state they are approved for potable water. (Booster systems state they are good for potable, but I just want a pump, not an entire system.) A lot of baby pumps say potable, but few over 2 hp spell it out.

So my question is; How do I insure I am compling to the florida plumbing code requirement that a pump be "rated" for potable water. (What do I show the inspector?)

Thanks,

Andy

 

RE: Pumps shall be rated for the transport of potable water

I know nothing about the Florida potable pump code, guess you should ask them for clarification. However, I can tell you that there are probably millions of pumps round the world pumping potable water constructed with cast iron or ductile iron cases and either cast iron, bronze or stainless steel impellers and trim.    

RE: Pumps shall be rated for the transport of potable water

Hi Andy,

If a pump is rated for potable water is prbably refering to something like an NSF 61 standard. The NSF standard ensures that clean drinking water can come in contact with materials without the water being contaminated.

Good Luck!

RE: Pumps shall be rated for the transport of potable water

(OP)
Thanks jmkmat,

I think a NSF 61 certified pump is exactly what I need to make everyone happy.

Andy

RE: Pumps shall be rated for the transport of potable water

potable water means drinkable water,which puts considerations when choosing the material to build the pump from

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources